ReleaseProcessOverview.md Step 16: add "(Major Releases Only)"
guidance to review/update the "SDP and P4D Version Compatibility"
section, referencing the P4 Server (P4D) EOM lifecycle table as
the source of truth for which versions to list. Prompted by
finding this section stale (still listing 2025.2 as latest,
including EOM'd P4D 2024.1) the day after 2026.1 GA shipped.